IT
Isaac Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Assumption-County, Louisiana
Our Model Tree links this Isaac Thomas across the 1910, 1920, 1930 and 1940 US Censuses in Assumption-County, Louisiana (XGBoost, ~Confirmed) — first a head (b.~1889), then head of a 5-person household.
Age 51
b. ~1889
Male
Head
Born: Louisiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Assumption-County, Louisiana |
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | Paincourtville |
| 1935 Residence (County) | Assumption |
| Additional Details | |
| Occupation | Laborer |
| Industry | Field |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 130 |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Laborer |
| Township / Ward | Paincourtville |
| Est. Birth Year | ~1889 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Thomas | Spouse | — | 45 | ~1895 |
| Grace Thomas | Daughter | — | 13 | ~1927 |
| Isaac Thomas | Head | — | 51 | ~1889 |
| Maggie Thomas | Daughter | — | 20 | ~1920 |
| Rose Thomas | Daughter | — | 23 | ~1917 |
Census Appearances
1910
East Baton …
Other, age 24
East Baton Rouge, Louisiana · implied b. ~1886 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Isaure |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | Black |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | Laborer |
| Industry | Saw Mill |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1920
East Baton …
Head, age 32
East Baton Rouge, Louisiana · implied b. ~1888 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | Laborer |
| Industry | Sugar Plant |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1930
Assumption, Louisiana
Head, age 42
Assumption, Louisiana · implied b. ~1888 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Louisiana |
| Age at First Marriage | 23 |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | Labour |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 600 |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Assumption-County, Louisiana
Head, age 51
Assumption-County, Louisiana · implied b. ~1889 — 5 household members
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | Paincourtville |
| 1935 Residence (County) | Assumption |
| Occupation | Laborer |
| Industry | Field |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 130 |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Isaac Thomas across 4 US Census years (1910, 1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Isaac Thomas
Head · 1940 · age 51 · b. ~1889 · Louisiana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Assumption-County, Louisiana
Open full size
1940 US Federal Census — Assumption-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01381-00356)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cleveland Melancon | 18 | Son | Laborer | Louisiana |
| 42 | Venola Melancon | 11 | Daughter | — | Louisiana |
| 43 | Ida Mae Melancon | 10 | Daughter | — | Louisiana |
| 44 | Oscar Melancon | 9 | Son | — | Louisiana |
| 45 | Isaac Thomas THIS PERSON | 51 | Head | Laborer | Louisiana |
| 46 | Elizabeth Thomas | 45 | Wife | — | Louisiana |
| 47 | Rose Thomas | 23 | Daughter | — | Louisiana |
| 48 | Maggie Thomas | 20 | Daughter | — | Louisiana |
| 49 | Grace Thomas | 13 | Daughter | — | Louisiana |
| 50 | Plesley Hawkins | 48 | Head | Laborer | Louisiana |
| 51 | James B. Hawkins | 47 | Wife | — | Louisiana |
| 52 | Andrew Guilfo | 33 | Head | Laborer | Louisiana |
| 53 | Georgiana Guilfo | 32 | Wife | — | Louisiana |
| 54 | Thelma Guilfo | 6 | Son | — | Louisiana |
| 55 | Annabelle Guilfo | 4 | Daughter | — | Louisiana |
| 56 | Alberta Guilfo | 3 | Daughter | — | Louisiana |
| 57 | Anthony Guilfo | 1 | Son | — | Louisiana |
| 58 | Clifford Guilfo | 0 | Son | — | Louisiana |
| 59 | Willie Crandall | 66 | Head | Laborer | Louisiana |
| 60 | Margret Crandall | 70 | Wife | — | Louisiana |
| 61 | Nola Ab Nelson | 35 | Wife | — | Louisiana |
| 62 | Joseph Nelson | 9 | Nephew | — | Louisiana |
| 63 | Manson Fontenot | 41 | Head | Laborer | Louisiana |
| 64 | Florence Fontenot | 42 | Wife | — | Louisiana |
| 65 | Lonnie Fontenot | 15 | Son | — | Louisiana |
| 66 | Caroline Fontenot | 7 | Daughter | — | Louisiana |
| 67 | Silven Fontenot | 6 | Son | — | Louisiana |
| 68 | Willie Crandall | 38 | Head | Laborer | Louisiana |
| 69 | Victoria Crandall | 35 | Wife | — | Louisiana |
| 70 | Ceola Crandall | 15 | Daughter | — | Louisiana |
| 71 | Victoria Crandall | 13 | Daughter | — | Louisiana |
| 72 | Elnora Crandall | 11 | Daughter | — | Louisiana |
| 73 | Hennie Crandall | 11 | Daughter | — | Louisiana |
| 74 | Elda Crandall | 9 | Son | — | Louisiana |
| 75 | Harry Crandall | 7 | Son | — | Louisiana |
| 76 | Willie Jr. Crandall | 5 | Son | — | Louisiana |
| 77 | Milton Clis | 20 | Head | Laborer | Louisiana |
| 78 | Mattie Clis | 17 | Wife | — | Louisiana |
| 79 | Brody Clis | 17 | Brother | Laborer | Louisiana |
| 80 | Nolan Clis | 2 | Son | — | Louisiana |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)